Occasionally I come up with an idea for a thing that I don’t care to work on myself. Here’s one that just came to me courtesy of a chocolate croissant: A Stain Labeling Pen.
The idea is a marker pen that I can write the name of a stain on a piece of clothing, preferably while wearing them so moderate heat stable and non-bleeding, that can be seen until wash day for treatment with the appropriate cleaning regime and then washes out completely in the wash process.
All yours. No intellectual property claimed by SCP.